Front end problems

i own a 1999 ford police interceptor with 150,000 on it and the problem im having is when im making turns theres a scraping/grinding plus a creeking nosie and when im driving on rough roads theres a clunking feeling and sound its all comming from the front left side so far i have replaced hub/bearing both shocks and tie rod ends tires there is a very little play up and down on the wheel also so i had the ball joints checked and thay said thay were ok so can any one help me please?